Vice-President Hamid Ansari has greeted Prime Minister Manmohan Singh on his birthday on Friday and wished him many more years in the service of the nation.
"May God grant you good health, happiness and many more years in the service of the nation," Ansari said in his message.
Singh turned 76 on Friday. He is known for spending his birthdays as any other normal day. Singh is on an official visit to the US.